KR20150026029A - 3-dimension image display device and driving method thereof - Google Patents

Abstract

Disclosed are a stereoscopic image display device and a driving method thereof. In particular, the present invention relates to a glassless stereoscopic image display device which comprises a barrier panel and an image panel and adjusts an open ratio of the barrier panel to display a stereoscopic image, and a driving method thereof. According to an embodiment of the present invention, the stereoscopic image display device having the barrier panel divides gray levels for two channels at a position, where a blocking area and a penetrating area meets, among channels of the barrier channel, and finely adjusts the gray levels, such that brightness characteristics of an image can be finely adjusted to realize a high quality stereoscopic image.

Description

TECHNICAL FIELD [0001] The present invention relates to a three-dimensional image display device and a method of driving the same,

The present invention relates to a stereoscopic image display apparatus and a driving method thereof, and more particularly, to a stereoscopic image display apparatus having a barrier panel and an image panel and displaying a stereoscopic image by controlling an open ratio of a barrier panel, .

In recent years, electronic information display devices have been developed not only to display only two-dimensional images, but also to provide three-dimensional (three-dimensional) stereoscopic images that can be sensed and sensed in three dimensions.

Generally, a stereoscopic image expressing a three-dimensional image is made by the principle of stereoscopic vision through two eyes. The binocular disparity that appears because the disparity of the two eyes, that is, the distance between the two eyes is about 65 mm, It is a factor. In other words, the left and right eyes see different 2D images, and when these two images are transmitted to the brain through the retina, the brain fuses them exactly to reproduce the depth sense and real feeling of the original three-dimensional image.

The principle described above is generally referred to as stereography. Currently presented techniques for displaying a three-dimensional stereoscopic image on a two-dimensional screen include a no-stereoscopic stereoscopic image display system, a holographic display system, and a time-division spectacle stereoscopic image display system.

In the non-eye-hardened stereoscopic image display system, a parallax barrier system in which an image can be separated and observed through a vertical grid-shaped aperture in front of each image in the right and left, and a parallax barrier system in which a half- A lenticular method using a lenticular plate, and an integral photography method using a fly-eye lens plate.

In the holographic display system, a 3D stereoscopic image having all the factors such as focus adjustment, convergence angle, binocular parallax, and motion parallax, which are factors for creating a stereoscopic effect, can be obtained, and it is classified into a laser light reproduction hologram and a white light reproduction hologram.

Particularly, although the above-described non-eye-hardened stereoscopic image display system has an advantage that glasses are not worn, there is a limit in that a viewing area due to a barrier is fixed and a stereoscopic image can not be implemented smoothly according to the viewer's position.

In order to overcome this limitation, a parallax barrier type stereoscopic image display device implements a 3D image by selectively shielding light incident from an image panel using a barrier panel and dividing the image into a left eye image and a right eye image.

1 is a view showing a conventional stereoscopic image display apparatus having a barrier panel and an image panel.

1, the conventional stereoscopic image display apparatus includes an image panel 10 for implementing an image to be displayed on a left eye L and a right eye R of a viewer by dividing the image into a left eye image l and a right eye image r, And a barrier panel 20 provided on the front surface of the image panel 10 to selectively block light incident from the image panel 10. [

The image panel 10 may be implemented as a liquid crystal display element of an ordinary active matrix structure or an organic electroluminescent element. In addition, the barrier panel 20 is a switchable barrier structure that selectively blocks light from the image panel 10, and includes two substrates each having a predetermined electrode pattern formed thereon, Layer.

In the barrier panel 20, when a common voltage is applied to one electrode pattern of the electrode patterns of the two substrates and a drive voltage for driving the liquid crystal layer is applied to the other electrode pattern, And becomes a transmissive area OA if no driving voltage is applied. Here, the other electrode pattern may have a multi-layer structure with an insulating layer interposed therebetween.

In the barrier panel 20, the ratio between the blocking area BA and the transmissive area OA is expressed as a ratio of the transmissive area OA per one pitch, and is set to a value at the time of designing the image display device. do. FIG. 2 is a view showing a channel driving mode of a barrier panel of a conventional stereoscopic image display apparatus. FIG. 3 is a graph showing the luminance change characteristics of an image according to angles of a viewer and a display apparatus . In FIG. 2, each channel is shown up and down, indicating that the position of the electrode pattern controlling the channel is divided into upper and lower layers.

The barrier panel is fixed while the transmission area (OA in FIG. 1) and the blocking area (BA in FIG. 1) are determined to be the size at the time of designing, respectively. Usually, the number of transmission areas OA and the number of blocking areas BA is set at a predetermined ratio in consideration of a predetermined viewing distance.

Referring to FIG. 2, in a barrier panel having one pitch of 16 channels, when the blocking area BA is set to 10 channels, the open ratio of the barrier panel is set to 10, Is expressed by the following equations (1),

Is determined as the ratio of the area occupied by the transmissive area at one pitch.

3 is a graph showing a relationship between a viewing angle and an image luminance according to various transmission ratios in a conventional stereoscopic image display apparatus.

Referring to FIG. 3, in the conventional stereoscopic image display device, when the transmission ratio is 6.26, the luminance of the image is less than 10 nit and there is almost no change according to the viewing angle. However, when the transmission ratio is about 37.5 as shown in FIG. 2, And ± 6 °, respectively. Further, when the transmissivity is changed from 43.75 to 50, the brightness can be set to have a brightness change of at least 40 nit.

Here, when a viewing angle is changed, a large change in luminance is recognized as a moving flicker for a viewer, which causes image quality degradation. In order to minimize such moving flicker, a curve having a transmission ratio as high as possible . In a typical image, it is preferable to set the transmission non-curved line to be parallel at a luminance of about 250 nit.

However, as shown in FIG. 3, in a high luminance image, luminance difference of an image is not only large but also when a luminance is higher than other angles, such as when the viewing angle is 0 ° when the transmission ratio is 56.25, , R image interference occurs, and the image quality is lowered.

That is, in the conventional stereoscopic image display device, since the number of channels in the barrier panel is fixed, the transmittance ratio is also limited. Therefore, controlling the barrier so as to minimize interference between neighboring pixels while minimizing moving flicker is limited have.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a non-eye-tightening stereoscopic image display apparatus and a driving method thereof that can precisely control a transmission ratio in a display device implementing a 3D stereoscopic image through a barrier panel There is a purpose.

In order to achieve the above object, a stereoscopic image display apparatus according to a preferred embodiment of the present invention includes: a display panel for displaying a left eye image and a right eye image separately; A barrier panel disposed on a front surface of the display panel and having a plurality of channels for selectively transmitting the left eye image and the right eye image; An eye tracking unit for tracking the viewer through front photographing to provide position information; At least one driver controlling the display panel and the barrier panel; And a timing controller for controlling the driving unit in response to a timing signal provided from an external system so that an intermediate gray level value is reflected in any one of the plurality of channels in accordance with luminance characteristics of an image.

According to another aspect of the present invention, there is provided a method of driving a stereoscopic image display device including dividing a left eye image and a right eye image, Selectively transmitting the left eye image and the right eye image by driving a plurality of channels; Providing location information by tracking a viewer; Shifting the plurality of channels according to the position information; And controlling the halftone value set corresponding to the luminance characteristic of the image to be reflected in any one of the plurality of channels.

According to the embodiment of the present invention, in a three-dimensional image display apparatus having a barrier panel, gray levels of two channels at a point where a blocking region and a transmissive region meet in the channels of the barrier panel are subdivided into a predetermined number , And the luminance characteristic of the image is finely adjusted to realize a high-quality stereoscopic image.

1 is a view showing a conventional stereoscopic image display apparatus having a barrier panel and an image panel.
2 is a diagram showing a channel driving mode of a barrier panel of a conventional stereoscopic image display apparatus.
FIG. 3 is a graph illustrating brightness variation characteristics of an image according to angles between a viewer and a display device at each transmission ratio with respect to the stereoscopic image display device of FIG. 2. FIG.
4 is a view illustrating a structure of a stereoscopic image display apparatus according to an embodiment of the present invention.
5 is a view illustrating a timing controller of a stereoscopic image display apparatus according to an exemplary embodiment of the present invention.
6 is a diagram illustrating a method of driving a stereoscopic image display apparatus according to an exemplary embodiment of the present invention.
7 is a diagram illustrating a channel driving mode of a barrier panel according to a method of driving a stereoscopic image display device of the present invention.
FIG. 8 is a diagram illustrating a change in the shape of the barrier according to the voltage control applied to the two channels of the barrier in the stereoscopic image display apparatus of the present invention.
FIG. 9 is a view showing a transmission ratio graph according to the barrier driving in FIG.

Hereinafter, a stereoscopic image display apparatus and a control method thereof according to an embodiment of the present invention will be described with reference to the drawings. The stereoscopic image display device according to the present invention may be applied to a liquid crystal display device, a field emission display, a plasma display panel, an electroluminescence device (EL) (EPD) or the like, and is not limited to a specific display device.

4 is a view illustrating a structure of a stereoscopic image display apparatus according to an embodiment of the present invention.

In order for the viewer to recognize the image output from the stereoscopic image display device as a 3D stereoscopic image, the left and right images must be displayed in the left and right eyes of the viewer respectively. In the non-stereoscopic glasses that do not use stereoscopic glasses, Limit the area where you can see. Therefore, in the stereoscopic image display apparatus according to the present invention, the eye tracking unit 150 is further provided to determine the position of the viewer, calculates the blocking area and the transmission area of the barrier according to the result, So that the barrier is shifted.

4, a stereoscopic image display apparatus according to an embodiment of the present invention includes a display panel 100 for displaying a left eye image and a right eye image in a divided manner, a gate driver 120 for providing a gate signal to the display panel 100, And a data driver 130 for providing a data signal, a barrier disposed on the front surface of the display panel 100 to form a barrier including a transmission region and a blocking region for transmitting or blocking a left eye image and a right eye image, A barrier driving unit 160 for controlling the barrier panel 140 according to the position information, a display unit 160 for displaying the position of the barrier 140, Receives various timing signals such as a clock signal from an external system (not shown), provides control signals of the respective driving units, and sets the barrier to a reset gray level value in accordance with the luminance characteristic of the image For controlling the air driver 160 includes a timing controller 170.

In the display panel 100, a plurality of gate lines GL and a plurality of data lines DL in a direction perpendicular thereto are formed in a matrix on a glass or plastic substrate, and pixels are defined at the intersections. Each pixel displays the three primary colors of R, G, and B, and displays the left eye image and the right eye image on one screen so as to implement a stereoscopic image together with the barrier panel 140.

For example, in the case of a liquid crystal display device, the display panel 100 includes a thin film transistor serving as a switching element for each pixel. The display panel 100 is electrically connected to the data line DL through the gate line GL, The image is displayed according to the electric field formed between the two electrodes corresponding to the signal.

In addition, in the case of the organic electroluminescent device, two thin film transistors serving as a switching element and a driving element are provided for each pixel, the switching element is made conductive by the gate wiring GL, The driving device causes a current to flow in the organic light emitting diode device corresponding to the applied data signal, thereby displaying an image.

The gate driver 120 applies a gate signal to the gate line GL arranged on the display panel 100 in response to the gate control signal GCS applied from the timing controller 170, And serves to turn-on or turn-off the thin film transistor. The gate control signal GCS includes a gate start pulse, a gate shift clock, and a gate output enable signal.

The gate driver 120 sequentially applies a gate signal to the gate line GL in one horizontal period (1H) from the upper portion of the display panel 100 to the lower portion or the lower portion of the display panel 100, register structure.

The data driver 130 converts the aligned image data RGB input according to the data control signal DCS input from the timing controller 110 into an analog data signal using the reference voltage. The data signal Vdata is latched by one horizontal period (1H) and output to the liquid crystal panel 100 simultaneously through all the data lines DL corresponding to the gate driving signal Vg. The data control signal DCS includes a source start pulse (SSP), a source shift clock (SSC), a source output enable (SOE) signal, and a polarity reversal signal , And POL).

 Accordingly, a data signal of an analog waveform supplied from the data driver 130 is simultaneously applied to all the pixels on the same horizontal line in synchronization with the gate signal. The data driver 130 may include a shift register, a latch, a decoder, a digital-analog converter (DAC), and an output buffer.

The barrier panel 140 is disposed on the front surface of the display panel 100 and has a switchable barrier structure for selectively transmitting or blocking the left eye image and the right eye image. Two substrates to be bonded together, and a liquid crystal layer interposed between the two substrates. Here, the liquid crystal layer can be driven in a normally white mode in which the transmittance is lowered as the potential difference between the common voltage and the drive voltage is larger.

A common voltage is applied to one electrode pattern among the electrode patterns of the two substrates, and the other electrode pattern is electrically connected to the other electrode pattern through a barrier wiring (BL) A driving voltage for driving the liquid crystal layer is applied to turn off the blocking region (channel off) by the change of the transmittance of the liquid crystal layer, and the transmissive region (channel on) if the driving voltage is not applied. Here, the other electrode pattern may have a multi-layer structure with an insulating layer interposed therebetween.

In addition, the barrier panel 140 of the present invention is driven in a transflective region corresponding to a finely adjusted halftone value according to the luminance characteristic of the display device, and the luminance characteristic of the image is adjusted in a direction in which the flicker is minimized. The description of driving to the semi-transmissive area with such intermediate gray level values will be described later.

Here, the channel of the barrier channel 140 is controlled such that the blocking area BA and the transparent area OA are shifted according to the position of the viewer so that a normal stereoscopic image is continuously provided to the viewer. To this end, Tracking means such as the tracking unit 150 is provided.

The eye tracking unit 150 tracks the current position of the viewer and provides the result to the timing controller 170. The eye tracking unit 150 may include a conventional camera sensor that photographs the front of the stereoscopic image display device in real time have.

The eye tracking unit may be provided inside or outside the display apparatus to detect the position information (TS) of the viewer and calculate the position of the viewer based on the detected information. Using the position information (TS) provided from the eye tracking unit 150, the barrier gradation calculation unit 175 determines the distance from the current position in which the stereoscopic image can be well recognized to the current viewer, The gray level values for the cut-off region and the transmission region of each channel for shifting are calculated.

The barrier driver 160 is electrically connected to the electrode patterns formed on the barrier panel 140 via the barrier interconnection line BL and drives the barrier panel 140 corresponding to the barrier control signal BCS, To the blocking area, the transmitting area, and the semi-transmitting area.

The timing controller 170 arranges the image data provided from the external system into a form that can be processed by the data driver 130 and supplies the gate driver 120, the data driver 130, and the barrier driver 160 ) ≪ / RTI >

In addition, the timing controller 170 according to the present invention is connected to the eye tracking unit 150 to receive the position information (TS) of the position of the viewer and shifts the barrier of the barrier panel 140 in response to the position information It is set so as to minimize the moving flicker occurring at the time of barrier shift through a predetermined halftone value.

The moving flicker is determined according to the transmission ratio of the barrier, and the transmission ratio corresponds to the ratio between the blocking region and the transmission region at one pitch of the barrier (see Equation 1). Therefore, there is a limitation in adjusting the transmittance ratio through the channel on / off in a barrier panel having a fixed number of channels. However, the timing controller 170 of the present invention controls a part of the channels to have a halftone between the blocking region and the transmissive region by referring to the predetermined halftone value, thereby finely adjusting the brightness characteristic of the image by driving the region to the transflective region.

That is, by controlling the amount of light by changing the gradation of some channels of the barrier, the brightness characteristic of the image is adjusted to minimize the moving flicker. To this end, the timing control unit further includes a halftone setting unit, which will be described in detail later.

Hereinafter, a timing controller of a stereoscopic image display apparatus according to an embodiment of the present invention will be described with reference to the drawings.

5 is a view illustrating a timing controller of a stereoscopic image display apparatus according to an exemplary embodiment of the present invention.

5, the timing controller 170 of the present invention includes an image signal processor 171 for aligning image data provided to an external system, a control signal generator 170 for generating a control signal of each driver in response to a timing signal, A barrier gray level calculating unit 175 for calculating a gray level value for each channel of the barrier and providing the result to the control signal generating unit 173 and an intermediate gray level value setting unit 173 for storing the gray level value, (177).

The video signal processor 171 rearranges the video data dRGB of the digital waveform provided from the external system so that the data driver can convert the data signal RGB into an analog waveform and provides the data driver to the data driver.

The control signal generator 173 generates control signals for the gate driver, the data driver, and the barrier driver in response to the timing signals including the horizontal synchronization signal H, the vertical synchronization signal V, and the clock signal CLK provided from the external system, (GCS, DCS, BCS).

The barrier gray level calculator 175 receives the position information TS of the viewer received from the eye tracking unit 150 and determines the current position of the viewer and outputs the control signal BCS so that the determination result is reflected in the barrier control signal BCS. And provides it to the generation unit 173.

That is, when the position of the viewer is changed after the barrier region and the transparent region of the barrier are determined by the initial position information TS, according to the updated position information TS, the time lapse of the video, i.e., the left eye image and the right eye image, The barrier and transmissive regions of the barrier must be shifted to match the eye exactly.

To this end, the barrier gray level calculator 175 calculates the first gray level value and the second gray level value for each channel of the barrier panel corresponding to the initial value or the updated position information TS, (173). The control signal generation section 173 generates the barrier control signal BSC based on the calculation result.

Here, the first gray level value may be a full-black gray level corresponding to the blocking region, and the second gray level value may be set to a full-white gray level corresponding to the transmissive region.

The barrier gray level calculating unit 175 adjusts a part of the gray level values of the channels of the barrier with reference to the gray level value stored in the gray level value setting unit 177 described later according to the brightness characteristic of the image.

In detail, the luminance characteristic of an image implemented by the display device is determined according to the open ratio of the currently set barrier. In the present invention, among the channels constituting the barrier, a position where the barrier region and the transmissive region meet By adjusting the gradation of the two channels of the first and second gradation values to the intermediate gradation value between the first gradation value and the second gradation value to finely adjust the luminance characteristic at a specific angle so as to minimize flicker and image superimposition on the image .

The halftone value setting unit 177 sets and stores halftone values for channels corresponding to fine adjustment in the barrier, that is, at two points where the blocking region and the transmission region meet at a pitch of one barrier .

The manufacturer or setter of the display device reproduces the example image or the like in the stereoscopic image display device, minimizes the moving flicker through the change of the field of view, and simultaneously keeps the neighboring left and right eye images in a range where superimposition due to high luminance does not occur And stores it in the halftone value setting unit 177. The halftone value setting unit 177 determines the optimum halftone value in the halftone value setting unit 177. [ As an example, when the gray scale value is 64 gray scales, it can be determined in a range of 1 to 62 gray excluding the minimum and maximum values of 0 gray and 63 gray.

According to the above-described structure, the timing controller of the stereoscopic image display apparatus according to the embodiment of the present invention controls the barrier so as to minimize the overlapping of the moving flicker and the image in the barrier shift driving.

Hereinafter, a driving method of a stereoscopic image display apparatus according to an embodiment of the present invention will be described with reference to the drawings.

6 is a diagram illustrating a method of driving a stereoscopic image display apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 6, the stereoscopic image display apparatus of the present invention includes an image display step S200 according to driving a display panel and a barrier panel, an eye tracking step S210 and S220 for a viewer, A step S230 of shifting the barrier by changing the transmission ratio, and a step S240 of applying the halftone value set in accordance with the transmission ratio.

In the image display step S200, as the gate signal and the data signal are applied to the display panel, the left eye image and the right eye image are divided and displayed. When a barrier signal is applied to the barrier panel, a plurality of channels are driven, Thereby displaying a stereoscopic image to the viewer. At this time, the plurality of channels are divided into the transmission area and the blocking area by the first tone value and the second tone value, and are driven as a switchable barrier.

In the viewer tracking step S210, the i-tracking unit connected to the timing control unit photographs the front of the display device and tracks the position of the viewer. The eye tracking unit tracks the position of the viewer in real time and provides the resultant position information to the timing controller.

If there is no change in the position of the viewer, the image is continuously displayed. If it is determined that the viewer has deviated from the current position due to the position information, the barrier shift step is performed (S220).

The barrier shift step S230 is a step of performing barrier shift by changing the tone values of a plurality of channels so that the barrier gray level calculation section of the timing control section corresponds to the position of the current viewer in the change of the viewer position. In this step, moving flicker may occur due to the barrier shift. In the present invention, image quality deterioration is minimized through the following step S240.

The step S240 of applying the set halftone value is a step of minimizing the moving flicker according to the barrier shift by applying the halftone value predetermined by the manufacturer or the viewer to the specific channel of the barrier.

A moving picture flicker may occur in a shift depending on the transmission ratio of the barrier. To minimize this, the manufacturer or the viewer of the display device sets a halftone value in accordance with the luminance characteristic of the image through the halftone value setting unit. In step S240, The grayscale calculation unit refers to the halftone value and controls the channel as a transflective region.

7 is a diagram illustrating a channel driving mode of a barrier panel according to a method of driving a stereoscopic image display device of the present invention.

Referring to FIG. 7, when the barrier panel of the present invention has 16 pitches (1ch to 16ch) in one pitch, compared with the conventional channel driving mode, Is set to 10 channels (ch4 to ch13), and the transmission ratio thereof is 37.5, so that the luminance difference in the case of 0 DEG and in the case of 6 DEG is large, and the viewer feels a large amount of moving flicker. However, The luminance of the two channels (4ch, 13ch) between the transmissive region and the transmissive region is adjusted to be at least less than the full-black, so that the luminance can be increased and the luminance difference according to the viewing angle can be leveled.

That is, in the present invention, the tone values of the two channels (4ch and 13ch) located at both ends of the channels (5ch to 12ch) constituting the blocking region are adjusted to flatten the luminance graph according to the transmission ratio with high curvature, Thereby minimizing flicker. Here, the adjustment of the tone values of the two channels (4ch, 13ch) should be set within a range in which light overlap between the two neighboring pixels is prevented.

FIG. 8 is a diagram showing a barrier shape change according to a voltage control applied to two channels of a barrier in the stereoscopic image display apparatus of the present invention, and FIG. 9 is a diagram showing a transmission ratio graph according to barrier driving in FIG.

8 and 9, when six transmission regions are set in a barrier panel having one pitch of 13 channels, a channel (ep) at the end of the barrier region has a 5V The luminance difference is about 150 nits at a point having a viewing angle of 0 ° and a viewing angle of 3 °, so that the viewer feels a high-intensity moving flicker during the barrier shift driving. Here, the viewing angle 0 ° is the center of the viewer and the viewing angle 3 ° corresponds to the viewer's eyes.

Referring to the transmission ratio graph when the gradation voltage of 1.6 V corresponding to the transflective region is applied, it can be seen that there is almost no difference between the point of view angle of 0 ° and the point of view angle of 3 °. Moving flicker can hardly be felt.

In addition, although not shown, when the luminance is high when 1.6 V gradation voltage is applied to the end channel ep, if the overlap between neighboring images occurs, the intermediate gradation value is increased to about the higher gradation voltage (ex. You can solve both moving flicker and image overlay problems.

While a number of embodiments have been described in detail above, it should be construed as being illustrative of preferred embodiments rather than limiting the scope of the invention. Therefore, the invention should not be construed as limited to the embodiments described, but should be determined by equivalents to the appended claims and the claims.

100: display panel 120: gate driver
130: Data driver 140: Barrier panel
150: eye tracking unit 160: barrier driving unit
170: Timing control part GL: Gate wiring
DL: Data wiring BL: Barrier wiring
GCS: Gate control signal DCS: Data control signal
RGB: Data signal BCS: Barrier control signal
TS: Location information

Claims (11)

A display panel for displaying the left eye image and the right eye image separately;
A barrier panel disposed on a front surface of the display panel and having a plurality of channels for selectively transmitting the left eye image and the right eye image;
An eye tracking unit for tracking the viewer through front photographing to provide position information;
At least one driver controlling the display panel and the barrier panel; And
A timing controller for controlling the driving unit in response to a timing signal provided from an external system so that an intermediate gray level value is reflected in any one of the plurality of channels in accordance with luminance characteristics of an image,
And the three-dimensional image display device. The method according to claim 1,
Wherein the plurality of channels comprises:
A blocking area for blocking an image by a first tone value; And
And a transmissive area through which an image is transmitted by the second tone value. 3. The method of claim 2,
Wherein the plurality of channels comprises:
And a semi-transmissive region between the blocking region and the transmissive region, the semi-transmissive region controlling the brightness of the image by the halftone gray level value. The method of claim 3,
The semi-
Wherein the two channels are located at both ends of the blocking region. The method according to claim 1,
Wherein the timing control unit comprises:
An image signal processor for aligning image data provided to the external system;
A control signal generator for generating a control signal of the driving unit in response to the timing signal;
A tone value setting unit for storing the halftone value; And
A gray level calculating unit for determining gray levels of the plurality of channels by referring to the position information and the halftone value,
And a display unit for displaying the three-dimensional image. The method according to claim 1,
Wherein the timing control unit comprises:
Wherein an eye tracking unit for detecting and providing position information of a current viewer is further connected to the stereoscopic image display apparatus. The method according to claim 6,
Wherein the timing control unit comprises:
And shifts the plurality of channels so that an image is positioned at a regular time point to a viewer in accordance with the position information. Displaying the left eye image and the right eye image separately;
Selectively transmitting the left eye image and the right eye image by driving a plurality of channels;
Providing location information by tracking a viewer;
Shifting the plurality of channels according to the position information; And
Controlling an intermediate gray level value set corresponding to a brightness characteristic of an image to be reflected in any one of the plurality of channels
And a driving method of the stereoscopic image display device. 9. The method of claim 8,
Wherein the plurality of channels comprises:
A blocking area for blocking an image by a first tone value; And
And a transmissive region through which an image is transmitted by the second tone value. 10. The method of claim 9,
Wherein the plurality of channels comprises:
And a semi-transmissive region controlled by the halftone gray level value between the blocking region and the transmissive region. 11. The method of claim 10,
Wherein the step of controlling the halftone value to be reflected in any one of the plurality of channels comprises:
Calculating a gray level of the corresponding channel by referring to the halftone value; And
Controlling the two channels at the locations where the blocking region and the transmitting region meet as the transflective region
And driving the three-dimensional image display device.

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